"Joseph Angelo D'Allesandro III (born December 31, 1948), better known as Joe Dallesandro, is an American actor and Warhol superstar. Having also crossed over into mainstream roles like mobster Lucky Luciano in The Cotton Club, Dallesandro is generally considered to be the most famous male sex symbol of American underground films of the 20th century, as well as a sex symbol of gay subculture."
Wikipedia

I also discovered that the name of "Andy Warhol's Dracula" was mostly to caught the attention of the big public, aka, for marketing purposes. As you can read at the New York Times Archives, he was asked in an interview about the topic:

Interview Warhol

When asked what he does, since Morrissey receives credit as writerdirector on their films, Warhol says, “I go to the parties,” But then—getting serious—he adds, “All of us at The Factory contribute Ideas.”

"A 98-minute version was released theatrically by Euro International Film in Italy on 14 August 1975 as Dracula cerca sangue di vergine e...mori di sete!!! (lit. Dracula is searching for virgins' blood, and...he's dying of thirst!!!)."

Roberto Curti (2017, Italian Gothic Horror Films, 1970–1979

Finally, Mario Balato, have hilarious lines at Dracula, as stated by Imdb like this:

Mario Balato, the Servant: I don't see why someone like me couldn't marry you, or one of your sisters.

Rubinia: Are you crazy?

Mario Balato, the Servant: Yeah... your mother'd never hear of such a thing. Had a good look at him in that wheelchair, almost about to die. That's the way it is with all that rich trash. They're all sick and rotten. The only future's in socialism.

Rubinia: Don't start talking about that again! You know how it bores me.

Finally, there is an interview of Joe Dallesandro that maybe you would want to check at Interview Magazine.

If you read til here, check this slightly NSFW video on Youtube celebrating the beauty of Joe.